A sunlight responsive WO₃/AgBr heterojunction photocatalyst was prepared using hydrothermal and chemical precipitation methods. The photocatalyst with band gap of 2.93 eV exhibited high efficiency of 86% toward degradation Rhodamine B (RhB) dye under visible light. Interestingly, nearly complete degradation of RhB dye and ofloxacin (OFL) antibiotic under natural sunlight was achieved. Creation of the WO₃/AgBr heterojunction is a promising strategy for enhancement of the photoactivity. This may be due to a decrease of charge carrier recombination rate at the interface and an increase in visible light absorption range of the resultant photocatalyst in comparison to those obtained from the pristine photocatalysts. Photogenerated hole plays the major role in photodegradation of the pollutant. The photocatalyst remains stable and still shows high efficiency after five consecutive cycles confirming its excellent cycling ability. This research demonstrates a promising performance of the sunlight active WO₃/AgBr heterojunction photocatalyst for detoxification of dye and antibiotic in wastewater by utilization of an economical solar energy.

采用水热法和化学沉淀法制备了一种阳光响应的WO ₃ /AgBr异质结光催化剂。带隙为 2.93 eV 的光催化剂在可见光下对降解罗丹明 B (RhB) 染料表现出 86% 的高效率。有趣的是，RhB 染料和氧氟沙星 (OFL) 抗生素在自然阳光下几乎完全降解。WO _{3 的}创建/AgBr 异质结是一种很有前景的增强光活性的策略。这可能是由于界面处载流子复合率的降低和所得光催化剂的可见光吸收范围与从原始光催化剂获得的那些相比增加了。光生空穴在污染物的光降解中起主要作用。光催化剂在连续五次循环后仍保持稳定并显示出高效率，证实了其出色的循环能力。该研究证明了阳光活性 WO ₃ /AgBr 异质结光催化剂在利用经济的太阳能对废水中的染料和抗生素进行解毒方面具有良好的性能。